text: (1+sqrt(5))/2 or ~1.618. It satisfies the (equivalent) relations 1/x=x-1 and x^2 =1+x. Geometrically, if you have a rectangle with this ratio between the sides, then remove a square from it, the remaining rectangle will have the same ratio. It's also the ratio between adjacent numbers in the Fibonacci sequence, as they get large. There's a lot of pseudoscience saying it appears everywhere in nature and art, but that's not actually true. _URL_0_